MESON Chess Problem Database

Problem Display
PID: 134091 (5K2/7b/2p5/3Pk2n/1Q5P/2p1NRp1/5P2/8 w - - 0 1)

Lazard, Frederic

L'Echiquier Francais, 1906

5K2/7b/2p5/3Pk2n/1Q5P/2p1NRp1/5P2/8

#2

7 + 6

6315 Mes problemes et etudes d'echecs (Lazard) 1929

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Rxf5#
    • 1...Bg8
      • 2.Rf5#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sf6
      • 2.Qf4#
    • 1...Sg7
      • 2.Qf4#
  • Keys
    • 1.Rf6!
      • threat
        • 2.Re6#
      • 1...Kxf6
        • 2.Qd6#
      • 1...Sxf6
        • 2.f4#
      • 1...cxd5
        • 2.Sg4#
      • 1...Be4
        • 2.Qxc3#
      • 1...Bf5
        • 2.Rxf5#
      • 1...Bg8
        • 2.Rf5#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sg7
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(f);N_GUARD::R1(C),XB(f)
    • B(f);N_GUARD::R1(C)
    • S(d);N_GUARD::QAB1(D),XS(d)
    • S(d);N_GUARD::QAB1(D)
  • Actual
    • R(C);
    • Threat
      • R1(C)
    • Vars
      • K(c);S_FLIGHT,XR(C)::QAR2(D)
      • S(d);N_GUARD,SBLOCK,XR(C)::P(A)
      • P(e);SBLOCK,XP(F)::S(B)
      • B(f);SBLOCK::QAB(D),XP(a)
      • B(f);N_GUARD::R1(C),XB(f)
      • B(f);N_GUARD::R1(C)
      • S(d);N_GUARD::QAB1(D),XS(d)
      • S(d);N_GUARD::QAB1(D)
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